We have the clay soils here as well, which is why I'm going to try the Back to Eden gardening in order to change the nature of these soils permanently. I've tried many different amendments and the clay just eats them like candy and never changes. You should watch that film if you think WE have bad soils...that guy's soils were even worse! Hard as a rock with clay.
Here's a link to the site where you can view that film...that will give you something to do while you work that hand!
http://www.backtoedenfilm.com/ I'm going to do it differently than all the other folks are doing....more like this guy did, as he used the wood chips on already plowed ground that had no sod on it. Supposed to do it the fall before you plant but I don't have that luxury, so will just plow as per usual this spring and place the wood chips on top of the plowed ground. Just think...no more hoeing if you use this method, just using the rake every now and again.
Are you using castor oil on that knee?
Sounds like your chickens are going like gangbusters! How old is this flock? What breeds do you have? My pullets haven't come into lay yet and my oldsters are abdicating right now except for the BA and every now and again one of the RSL.